<template>
  <div>
    <el-row class="do-exam-title">
      <el-col :span="24">
        <span :key="item.itemOrder" v-for="item in answer.answerItems">
          <el-tag
            :type="questionCompleted(item.completed)"
            class="do-exam-title-tag"
            @click="goAnchor('#question-'+item.itemOrder)"
          >{{item.itemOrder}}</el-tag>
        </span>
      <p>  <span class="do-exam-time0">
          <label>剩余时间：</label>
          <label>{{formatSeconds(remainTime)}}</label>
        </span></p>
      </el-col>
    </el-row>
    <!-- <el-row class="do-exam-title-hidden">
      <el-col :span="24">
        <span :key="item.itemOrder" v-for="item in answer.answerItems">
          <el-tag class="do-exam-title-tag">{{item.itemOrder}}</el-tag>
        </span>
        <span class="do-exam-time">
          <label>剩余时间：</label>
        </span>
      </el-col>
    </el-row> -->
    <el-container class="app-item-contain">
      <el-header class="align-center">
        <h1>{{form.name}}</h1>
        <div>
          <span class="question-title-padding">试卷总分：{{form.score}}</span>
          <span class="question-title-padding">考试时间：{{form.suggestTime}}分钟</span>
        </div>
      </el-header>
      <el-main>
        <el-form :model="form" ref="form" v-loading="formLoading" label-width="100px">
          <el-row :key="index" v-for="(titleItem,index) in form.titleItems">
            <h3>{{titleItem.name}}</h3>
            <el-card class="exampaper-item-box" v-if="titleItem.questionItems.length!==0">
              <el-form-item
                :key="questionItem.itemOrder"
                :label="questionItem.itemOrder+'.'"
                v-for="questionItem in titleItem.questionItems"
                class="exam-question-item"
                label-width="50px"
                :id="'question-'+ questionItem.itemOrder"
              >
                <QuestionEdit
                  :qType="questionItem.questionType"
                  :question="questionItem"
                  :answer="answer.answerItems[questionItem.itemOrder-1]"
                />
              </el-form-item>
            </el-card>
          </el-row>
          <el-row class="do-align-center">
            <el-button type="primary" @click="submitForm">提交</el-button>
            <el-button>取消</el-button>
          </el-row>
        </el-form>
      </el-main>
    </el-container>
  </div>
</template>

<script>
import { mapState, mapGetters } from "vuex";
import { formatSeconds } from "@/utils";
import QuestionEdit from "../components/QuestionEdit";
import { getList, findById } from "@/api/exam/paper";
import {answerSubmit} from '@/api/exam/examPaperAnswer';

export default {
  components: { QuestionEdit },
  data() {
    return {
      form: {},
      formLoading: false,
      answer: {
        questionId: null,
        doTime: 0,
        answerItems: []
      },
      timer: null,
      remainTime: 0
    };
  },
  created() {
    let id = this.$route.query.id;
    let _this = this;
    if (id && parseInt(id) !== 0) {
      _this.formLoading = true;
      findById(id).then(re => {
        _this.form = re.data;
        _this.remainTime = re.data.suggestTime * 60;
        _this.initAnswer();
        _this.timeReduce();
        _this.formLoading = false;
      });
    }
  },
  mounted() {},
  beforeDestroy() {
    window.clearInterval(this.timer);
  },
  methods: {
    formatSeconds(theTime) {
      return formatSeconds(theTime);
    },
    timeReduce() {
      let _this = this;
      this.timer = setInterval(function() {
        if (_this.remainTime <= 0) {
          _this.submitForm();
        } else {
          ++_this.answer.doTime;
          --_this.remainTime;
        }
      }, 1000);
    },
    questionCompleted(completed) {
      return this.enumFormat(this.doCompletedTag, completed);
    },
    goAnchor(selector) {
      this.$el
        .querySelector(selector)
        .scrollIntoView({
          behavior: "instant",
          block: "center",
          inline: "nearest"
        });
    },
    initAnswer() {
      this.answer.id = this.form.id;
      let titleItemArray = this.form.titleItems;
      for (let tIndex in titleItemArray) {
        let questionArray = titleItemArray[tIndex].questionItems;
        for (let qIndex in questionArray) {
          let question = questionArray[qIndex];
          this.answer.answerItems.push({
            questionId: question.id,
            content: null,
            contentArray: [],
            completed: false,
            itemOrder: question.itemOrder
          });
        }
      }
    },
    submitForm() {
      let _this = this;
      window.clearInterval(_this.timer);
      _this.formLoading = true;
      answerSubmit(this.answer).then(re => {
        if (re.code === 20000) {
          _this.$alert('试卷得分：' + re.data + '分', '考试结果', {
            confirmButtonText: '返回考试记录',
            callback: action => {
              _this.$router.push('/test/record')
            }
          })
        } else {
          _this.$message.error(re.message)
        }
        _this.formLoading = false
      }).catch(e => {
        _this.formLoading = false
      })
    }
  },
  computed: {
    ...mapGetters("enumItem", ["enumFormat"]),
    ...mapState("enumItem", {
      doCompletedTag: state => state.exam.question.answer.doCompletedTag
    })
  }
};
</script>

<style lang="scss" scoped>
.align-center {
  text-align: center;
}

.exam-question-item {
  padding: 10px;

  .el-form-item__label {
    font-size: 15px !important;
  }
}

.question-title-padding {
  padding-left: 25px;
  padding-right: 25px;
}
</style>
